<!--
 * @Description: 
 * @Author: charles
 * @Date: 2021-11-08 11:47:22
 * @LastEditors: charles
 * @LastEditTime: 2021-11-08 12:20:34
-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>列表渲染</title>
  <script src="https://cdn.bootcdn.net/ajax/libs/react/17.0.2/umd/react.production.min.js"></script>
  <script src="https://cdn.bootcdn.net/ajax/libs/react-dom/17.0.2/umd/react-dom.production.min.js"></script>
  <script src="https://cdn.bootcss.com/babel-standalone/6.26.0/babel.min.js"></script>
  <script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
  // 查询第一页资讯信息 并且显示到页面中
  class App extends React.Component {
    constructor(props){
      super(props);
      this.state = {
        articles:[]
      }
    }

    // 加载资讯
    loadArticles(){
      let url = "http://121.199.29.84:8002/index/pageQueryArticles"
      axios.get(url,{
        params:{page:1,pageSize:10}
      }).then(resp=>{
        this.setState({
          articles:resp.data
        })
      })
    }

    componentDidMount(){
      this.loadArticles();
    }

    
    render(){
      let articles = this.state.articles;
      let content ;
      if(articles.status == 200){
        content = 
          <ul>
            {
              articles.data.list.map( item => {
                return <li key={item.id}>{item.title}</li>
              }) 
            }
          </ul>
      } else {
        content = 
          <div> {articles.message}</div>
      }

      return (
        <div>
          <h2>资讯</h2>  
          { content }
        </div>
      )
    }
  }
  ReactDOM.render(<App/>, document.getElementById('app'));
  
  
  </script>
</body>
</html>
